S65

I have a scenario that I'd appreciate input on as to whether or not it is feasible.

Let's say two submerged submarines are very close to each other, <2 miles from each other. A large cargo ship is passing through.

Submarine A has detected B passively and has good awareness of what's happening. Submarine B for whatever reason (inferior equipment/etc.) knows A is in the area but not much else, and is looking for A. Unsure that A knows where it is, B avoids using active sonar.

Would it be possible for submarine A to use the cargo ship to help mask its movement away from B? I was thinking like keeping the cargo ship in between A and B, or having A navigate under the cargo ship. Is that feasible, or is that wishful thinking?

Also, it looks like Hugo Chavez is seeking Kilo submarines.
Chavez could take loan to buy Russian subs - Navy News, opinions, editorials, news from Iraq, photos, reports - Navy Times

Sea Toby

Back during WWII your theory would have worked, but in the twenty first century we have much better sound equipment and computers which can mute the sound of the cargo ship.

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Maxor

Going to agree for the most part with toby on this. Though the extra background noise may provide a break in contact so that the second sub can change sound layers or add some distance and blend into background. Its not a sure thing but generally the more noise producing vessels floating about causing interferance and more vessels for the sonar operator to keep track of the better.